Study: Cold germs lurk on common household items

WASHINGTON (AP) — Someone in your house have the sniffles? Watch out for the refrigerator door handle. The TV remote, too. A new study finds that cold sufferers often leave their germs there, where they can live for two days or longer.

Scientists at the University of Virginia, long known for its virology research, tested surfaces in the homes of people with colds and reported the results Tuesday at the nation’s premier conference on infectious diseases.

Doctors don’t know how often people catch colds from touching germy surfaces as opposed to, say, shaking a sick person’s hand, said Dr. Birgit Winther, an ear, nose and throat specialist who helped conduct the study.

Two years ago, she and other doctors showed that germs survived in hotel rooms a day after guests left, waiting to be picked up by the next person checking in.

For the new study, researchers started with 30 adults showing early symptoms of colds. Sixteen tested positive for rhinovirus, which causes about half of all colds. They were asked to name 10 places in their homes they had touched in the preceding 18 hours, and researchers used DNA tests to hunt for rhinovirus.

“We found that commonly touched areas like refrigerator doors and handles were positive about 40 percent of the time” for cold germs, Winther said.

All three of the salt and pepper shakers they tested were contaminated. Other spots found to harbor the germ: six out of 18 doorknobs; eight of 14 refrigerator handles; three of 13 light switches; six of 10 remote controls; eight of 10 bathroom faucets; four of seven phones; and three of four dishwasher handles.